Practice areas: Family Law; view more
Licensed in Arizona since: 2003
Education: Case Western Reserve University School of Law
Selected to Super Lawyers: 2018, 2026 
Selected to Rising Stars: 2012 - 2013 Attorney Experience
Jason B. Castle is the managing attorney at Castle Law in Mesa, Arizona. He focuses his practice on complex family law issues, including divorce, child support, parenting time, and cases involving high conflict or complex assets. His clients appreciate his ability to execute focused case strategy, communicate persuasively, connect with judges, and think critically in the moment.
Mr. Castle started his professional career as a criminal trial lawyer with the City of Phoenix Prosecutor's Office, arguing cases before juries and judges. He switched to family law in 2005 and has since resolved a broad range of matters, from easy to challenging. With more than 20 years of experience, he has handled numerous high-conflict custody matters, including accusations of sexual, emotional or physical abuse. A 1997 B.A. graduate of Indiana University, Mr. Castle secured his Juris Doctor from Case Western Reserve University School of Law. He has been licensed to practice in Arizona since 2003.
Social Work Experience
Before becoming an attorney, Jason obtained his master’s degree in social work from the University of Cincinnati and worked as a social worker for "at risk" children. Through his education and professional experience, he developed a useful and comprehensive understanding of child development and the law, both of which powerfully inform his practice as a family law attorney to this day. He leverages his social work experience in his current family law practice to help families navigate the non-legal aspects of such circumstances.
Practice areas
Family LawFocus areas
Alimony & Spousal Support, Child Support, Divorce, Paternity
- 100% Family Law
First Admitted: 2003, Arizona
Professional Webpage: https://www.jcastlelaw.com/our-team
Bar / Professional Activity
- Member of the Maricopa County Bar Association, 2003
- Member, State Bar of Arizona, 2004
- Appointed as Court Advisor for the Maricopa County Superior Court, 2008
- Executive Board Member for Maricopa County Bar Association, Family Law Section , 2010
- Appointed to serve as Judge Pro Tempore in the Maricopa County Superior Court, 2010
- Past president and member of the Arizona Chapter of the Association of Family and Conciliation Courts, 2012
- Appointed as a Parenting Coordinator for the Maricopa County Superior Court., 2016
- Board Member for Helping Hands for Single Moms, 2019
Verdicts / Settlements (Case Results)
- Jason represented Wife, who owned a successful business throughout the marriage. After 12 years of marriage, Husband filed for divorce whereby he asserted a claim for community interest and wanted Wife to sell the business to obtain his interest. Jason successfully utilized a forensic accountant and business valuator to illustrate that the business interest of Husband had been fairly compensated during the marriage and therefore was not entitled to additional compensation. Jason was also able to successfully have the business awarded to Wife for a favorable value, which allowed for a good property equalization result. OUTCOME: Good property equalization result.
- Jason was retained by Father in a paternity matter whereby Mother wanted to relocate to California. Jason immediately filed a paternity action in Arizona and contemporaneously Mother filed in California. Jason challenged California's jurisdiction and requested a hearing under the Uniform Child Custody Jurisdiction Enforcement Act ("UCCJEA"). After briefing and two hearings that included a joint hearing between the Arizona and California Court, Jason successfully kept the case in Arizona and preserved Father's rights in the process. As a result, Father obtained a very favorable result that allowed him to retain his children. OUTCOME: Paternity Matter - Preserved Father's rights
- Jason represented Husband in a post decree custody dispute that Mother had alleged that Father had abused Mother and their non-common child. As a result of the allegations, Father's parenting time access was reduced to four (4) hours, supervised, per week. When Father came to Jason his parenting time had been reduced for almost 18 months. Jason successfully moved the matter to trial whereby the Court reversed the temporary orders and awarded Father equal access and joint custody. Jason was also successful in getting Father sole custody with limited access for mother over the next 12 months. As a result, the child went from having several behavioral and emotional problems to thriving at home, school and in the community. OUTCOME: Child Custody Matter - Successfully moved the matter to trial whereby the Court reversed the temporary orders and awarded Father equal access and joint custody
- Jason was retained by Wife, who had accumulated significant RSU and shares in the company. Jason was able to successfully present evidence of the allocation between separate and community property to give Wife a significant award as separate thereby avoiding the necessity to divide said shares in the community property division. OUTCOME: Successful preservation of sole property
- Jason was retained by Husband after trial where the Court had ruled against Father in just about every category including depriving Husband of his sole and separate property. Jason was successful in obtaining a new trial. During the new trial the Court amended the prior order to grant Father two homes and property he had obtained to build a marital residence. This resulted in Husband obtaining significant property value that he would have been deprived of receiving otherwise. OUTCOME: Obtained reversal of a bad ruling
Pro bono / Community Service
- Volunteer Lawyers Program of Arizona, Pro Bono Attorney of the Year, 2010
- Volunteer Lawyers Program, Outstanding Pro Bono Attorney of the Month (February), 2015
Honors
- Southwest Top Attorney, Super Lawyers, 2026
- Best Lawyer: Tier 1 Family Law, Family Law Mediation, Best Lawyers in America, 2026
- Best Lawyer: Family Law, Family Law Mediation, Best Lawyers in America, 2025
- AV Preeminent Rated, Martindale-Hubbell, 2025
- Best Lawyer: Family Law, Family Law Mediation, Best Lawyers in America, 2024
- AV Preeminent Rated, Martindale-Hubbell, 2024
- Best Lawyer: Family Law, Family Law Mediation, Best Lawyers in America, 2023
- Best Divorce Attorney, Best of the Desert Community Choice Awards, 2023
- Best Lawyer: Family Law, Family Law Mediation, Best Lawyers in America, 2022
- Best Lawyer: Family Law, Family Law Mediation, Best Lawyers in America, 2021
- Best Lawyer: Family Law, Family Law Mediation, Best Lawyers in America, 2020
- Tier 2 Family Law Mediator, US News & World Report, 2020
- Top Attorney, Phoenix Magazine, 2018
- Southwest Top Attorney, Super Lawyers, 2018
- Best of Our Valley, Arizona Foothills Magazine, 2013
- "Rising Star", Super Lawyers, 2013
- "Rising Star", Super Lawyers, 2012
- Pro Bono Attorney of the Year, Volunteer Lawyers Program of Arizona, 2011
Educational Background
- Indiana University , 1997
- University of Cincinnati , 2000
Other Outstanding Achievements
- Jason B. Castle's family law focused firm, Castle Law, LLC, was awarded Best Law Firm: Family Law in 2026 by Best Law Firm in America, 2026
- Jason B. Castle's family law focused firm, Castle Law, LLC, was awarded Best Law Firm: Family Law in 2025 by Best Law Firm in America, 2025
- Jason B. Castle's family law focused firm, Castle Law, LLC, was awarded Best Law Firm: Family Law in 2024 by Best Law Firm in America, 2024
- Jason B. Castle's family law focused firm, Castle Law, LLC, was awarded Best Law Firm: Family Law in 2023 by Best Law Firm in America, 2023
- Best of the Desert Community Choice Awards voted Castle Law, LLC, as Best Law Firm: Family Law in 2023 , 2023
- Jason B. Castle's family law focused firm, Castle Law, LLC, was awarded Best Law Firm: Family Law in 2022 by Best Law Firm in America, 2022
- Jason B. Castle's family law focused firm, Castle Law, LLC, was awarded Best Law Firm: Family Law in 2021 by Best Law Firm in America, 2021
- Jason B. Castle's family law focused firm, Castle Law, LLC, was awarded Best Law Firm: Family Law in 2020 by Best Law Firm in America, 2020
These comments were made by fellow attorneys during the annual nomination process.
“Jason is one of the finest attorneys in Arizona. He is thoughtful and resolution oriented.”
“Jason is extremely knowledgeable and professional. He does a great job advocating for his clients. He is a pleasure to work with.”
Selections
- Super Lawyers: 2018, 2026
- Rising Stars: 2012 - 2013
